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https://www.readbyqxmd.com/read/28346815/improvement-of-identification-methods-for-honeybee-specific-lactic-acid-bacteria-future-approaches
#1
Sepideh Lamei, Yue O O Hu, Tobias C Olofsson, Anders F Andersson, Eva Forsgren, Alejandra Vásquez
Honeybees face many parasites and pathogens and consequently rely on a diverse set of individual and group-level defenses to prevent disease. The crop microbiota of Apis mellifera, composed of 13 Lactic Acid Bacterial (LAB) species within the genera Lactobacillus and Bifidobacterium, form a beneficial symbiotic relationship with each other and the honeybee to protect their niche and their host. Possibly playing a vital role in honeybee health, it is important that these honeybee specific Lactic Acid Bacterial (hbs-LAB) symbionts can be correctly identified, isolated and cultured, to further investigate their health promoting properties...
2017: PloS One
https://www.readbyqxmd.com/read/28346730/cheese-supplemented-with-probiotics-reduced-the-candida-levels-in-denture-wearers-rct
#2
Tatiana Yuriko Miyazima, Karin Hitomi Ishikawa, Marcia Pinto Alves Mayer, Susana Marta Isay Saad, Atlas Edson Moleros Nakamae
OBJETIVES: The access to probiotics should be facilitated in order to encourage their usage. We evaluated the effect of consumption of two experimental probiotic-containing cheese on the oral colonization of Candida in denture wearers. METHODS: Sixty denture wearers harboring oral Candida were randomly allocated in groups who received cheese supplemented with Lactobacillus acidophilus NCFM (T1) or Lactobacillus rhamnosus Lr-32 (T2), daily for 8 weeks, and a control group (C) who received a control cheese...
March 27, 2017: Oral Diseases
https://www.readbyqxmd.com/read/28346719/reduced-th22-cell-proportion-and-prevention-of-atopic-dermatitis-in-infants-following-maternal-probiotic-supplementation
#3
Anne Dorthea Bjerkenes Rø, Melanie Rae Simpson, Torstein Baade Rø, Ola Storrø, Roar Johnsen, Vibeke Videm, Torbjørn Øien
In the randomized, controlled study Probiotics in the Prevention of Allergy among Children in Trondheim (ProPACT), maternal probiotic supplementation reduced the incidence of atopic dermatitis (AD) in the offspring. In the current study, we hypothesized that the effect was mediated by a shift in the T helper (Th) cells in the children. OBJECTIVE: To examine whether Th cell proportions were affected by maternal probiotic supplementation and thus could mediate the preventive effect of probiotics on AD...
March 27, 2017: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28346358/genomic-evidence-for-bacterial-determinants-influencing-obesity-development
#4
Raphael D Isokpehi, Shaneka S Simmons, Matilda O Johnson, Marinelle Payton
Obesity is a major global public health problem requiring multifaceted interventional approaches including dietary interventions with probiotic bacteria. High-throughput genome sequencing of microbial communities in the mammalian gastrointestinal system continues to present diverse protein function information to understand the bacterial determinants that influence obesity development. The goal of the research reported in this article was to identify biological processes in probiotic bacteria that could influence the mechanisms for the extraction of energy from diet in the human gastrointestinal system...
March 26, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28344333/stressor-exposure-has-prolonged-effects-on-colonic-microbial-community-structure-in-citrobacter-rodentium-challenged-mice
#5
Jeffrey D Galley, Amy R Mackos, Vanessa A Varaljay, Michael T Bailey
Stressor exposure significantly affects the colonic mucosa-associated microbiota, and exacerbates Citrobacter rodentium-induced inflammation, effects that can be attenuated with probiotic Lactobacillus reuteri. This study assessed the structure of the colonic mucosa-associated microbiota in mice exposed to a social stressor (called social disruption), as well as non-stressed control mice, during challenge with the colonic pathogen C. rodentium. Mice were exposed to the social stressor or home cage control conditions for six consecutive days and all mice were challenged with C...
March 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28344038/structural-insights-into-the-substrate-recognition-and-reaction-specificity-of-the-plp-dependent-fold-type-i-isoleucine-2-epimerase-from-lactobacillus-buchneri
#6
Rida Awad, Pierre Gans, Jean-Baptiste Reiser
The isoleucine 2-epimerase from Lactobacillus buchneri has been previously identified and characterized to catalyze the pyridoxal 5'-phosphate (PLP)-dependent racemization and epimerization of a broad spectrum of nonpolar amino acids from L- to D-form and vice versa, in particular isoleucine. In this study, crystal structures of both native and PLP-complex forms of this racemase are presented at 2.6 and 2.15 Å resolution, respectively. Both structures show that the protein belongs to the fold-type I subgroup of PLP-dependent enzymes and is very close to aminobutyrate aminotransferases family, as it has been suspected because of their sequence homology...
March 23, 2017: Biochimie
https://www.readbyqxmd.com/read/28343858/-inhibitory-capacity-of-lactobacillus-spp-against-pathogens-involved-in-foodborne-diseases
#7
María J Ruiz, Rocío Colello, Nora L Padola, Analía I Etcheverría
The genus Lactobacillus daily generates a growing interest among microbiologists and technologists, who try to discover new biotechnological applications and probiotic properties. The main goal of this study was to evaluate the inhibitory capacity of Lactobacillus spp. against pathogens (Escherichia coli O157:H7, Salmonella spp., Staphylococcus aureus) involved in foodborne diseases. For this purpose, samples were collected at different stages of the pork production chain. Seventy eight bacterial strains were isolated...
March 23, 2017: Revista Argentina de Microbiología
https://www.readbyqxmd.com/read/28343402/probiotic-administration-improves-sperm-quality-in-asthenozoospermic-human-donors
#8
D G Valcarce, S Genovés, M F Riesco, P Martorell, M P Herráez, D Ramón, V Robles
The objective of this study is to analyse the effect of the ingestion of two selected antioxidant probiotics strains (Lactobacillus rhamnosus CECT8361 and Bifidobacterium longum CECT7347) on sperm quality parameters in asthenozoospermic males after three and six weeks of administration. Nine asthenozoospermic men without any medical treatment under similar diet conditions participated in the study. The quality of individual sperm samples was evaluated before (previous to ingestion), during (after 3 and 6 weeks of ingestion) and after probiotic administration (3 and 6 weeks after finishing the treatment)...
March 27, 2017: Beneficial Microbes
https://www.readbyqxmd.com/read/28342608/production-of-reuterin-in-a-fermented-milk-product-by-lactobacillus-reuteri-inhibition-of-pathogens-spoilage-microorganisms-and-lactic-acid-bacteria
#9
Y Ortiz-Rivera, R Sánchez-Vega, N Gutiérrez-Méndez, J León-Félix, C Acosta-Muñiz, D R Sepulveda
We assessed the antimicrobial activity of reuterin produced in vitro in glycerol aqueous solutions in situ by Lactobacillus reuteri ATCC 53608 as part of a fermented milk product against starter (Lactobacillus delbrueckii ssp. bulgaricus and Streptococcus thermophilus), spoilage (Penicillium expansum), pathogenic (Staphylococcus aureus, Salmonella enterica ssp. enterica, and Listeria monocytogenes), and pathogen surrogate (Escherichia coli DH5α) microorganisms. We also assayed the influence of cold storage (28 d at 4°C) and reuterin on the color and rheology of the fermented milk product...
March 22, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28342006/potential-synergistic-effects-of-a-mixture-of-mineral-trioxide-aggregate-mta-cement-and-bacillus-subtilis-in-dental-caries-treatment
#10
Shunya Oka
Bacillus subtilis is nonpathogenic in humans and produces a number of useful substances and, therefore, this bacterium is used in probiotic therapy. There have been trials of B. subtilis for patients with periodontitis, but not for patients with caries. Similarly, mineral trioxide aggregate (MTA) cement has been widely used for endodontic treatment, but there are few reports of its use for caries. Therefore, examinations were performed regarding the benefits of addition of B. subtilis to MTA cement for treatment of dental caries...
March 24, 2017: Odontology
https://www.readbyqxmd.com/read/28341908/lactic-acid-production-from-submerged-fermentation-of-broken-rice-using-undefined-mixed-culture
#11
Luiza Varela Nunes, Fabiane Fernanda de Barros Correa, Pedro de Oliva Neto, Cassia Roberta Malacrida Mayer, Bruna Escaramboni, Tania Sila Campioni, Natan Roberto de Barros, Rondinelli Donizetti Herculano, Eutimio Gustavo Fernández Núñez
The present work aimed to characterize and optimize the submerged fermentation of broken rice for lactic acid (LA) production using undefined mixed culture from dewatered activated sludge. A microorganism with amylolytic activity, which also produces LA, Lactobacillus amylovorus, was used as a control to assess the extent of mixed culture on LA yield. Three level full factorial designs were performed to optimize and define the influence of fermentation temperature (20-50 °C), gelatinization time (30-60 min) and broken rice concentration in culture medium (40-80 g L(-1)) on LA production in pure and undefined mixed culture...
April 2017: World Journal of Microbiology & Biotechnology
https://www.readbyqxmd.com/read/28339947/nitrogen-corrected-apparent-metabolisable-energy-values-of-barley-varies-by-treatment-and-species
#12
Majid Alahyari-Shahrasb, Hoseein Moravej, Ruhollah Kianfar, Woo Kyun Kim
The aim of this study was to evaluate the effects of two species of poultry (cockerel and Japanese quail), two levels of enzyme (0 and 0.5 g/kg), and 6 processing methods (control (C), gamma irradiation 25 (GI25), and 50 kGy (GI50), autoclaving (AU), fermentation without lactobacillus (F), and fermentation with lactobacillus (FL)) on the nitrogen-corrected apparent metabolisable energy (AMEn) of barley. In this experiment, each processing method was tested at two levels of enzyme (0 and 0.5 g/kg) in six replications with two cockerels or four quails per replication...
February 22, 2017: Poultry Science
https://www.readbyqxmd.com/read/28339714/effect-of-whole-yeast-cell-product-supplementation-citristim%C3%A2-on-immune-responses-and-cecal-microflora-species-in-pullet-and-layer-chickens-during-an-experimental-coccidial-challenge
#13
Ashley D Markazi, Victor Perez, Mamduh Sifri, Revathi Shanmugasundaram, Ramesh K Selvaraj
Three separate experiments were conducted to study the effects of whole yeast cell product supplementation in pullets and layer hens. Body weight gain, fecal and intestinal coccidial oocyst counts, cecal microflora species, cytokine mRNA amounts, and CD4+ and CD8+ T-cell populations in the cecal tonsils were analyzed following an experimental coccidial infection. In Experiment I, day-old Leghorn layer chicks were fed 3 experimental diets with 0, 0.1, or 0.2% whole yeast cell product (CitriStim®, ADM, Decatur, IL)...
February 21, 2017: Poultry Science
https://www.readbyqxmd.com/read/28339708/effects-of-dietary-methyl-sulfonyl-methane-msm-supplementation-on-growth-performance-nutrient-digestibility-meat-quality-excreta-microbiota-excreta-gas-emission-and-blood-profiles-in-broilers
#14
Y Jiao, J H Park, Y M Kim, I H Kim
A 29-d trial was conducted to evaluate the effects of dietary methyl sulfonyl methane (MSM) supplementation on growth performance, meat quality, nutrient digestibility, excreta microbiota, excreta gas emission, and blood profiles in broilers. A total of 816 1-day-old male Ross 308 broilers (44 ± 0.44 g) were assigned to 4 dietary treatments, composed of 12 replicates with 17 birds per replicate. The 4 treatments were: 1) CON, basal diet; 2) S1, CON + 0.05% MSM; 3) S2, CON + 0.10% MSM; 4) S3, CON + 0.20% MSM...
February 22, 2017: Poultry Science
https://www.readbyqxmd.com/read/28339527/microbial-community-mapping-in-intestinal-tract-of-broiler-chicken
#15
Yingping Xiao, Yun Xiang, Weidong Zhou, Jinggang Chen, Kaifeng Li, Hua Yang
Domestic chickens are valuable sources of protein associated with producing meat and eggs for humans. The gastrointestinal tract (GIT) houses a large microbial community, and these microbiota play an important role in growth and health of chickens, contributing to the enhancement of nutrient absorption and improvement of the birds' immune systems. To improve our understanding of the chicken intestinal microbial composition, microbiota inhabiting 5 different intestinal locations (duodenum, jejunum, ileum, cecum, and colon) of 42-day-old broiler chickens were detected based on 16S rRNA gene sequence analysis...
October 6, 2016: Poultry Science
https://www.readbyqxmd.com/read/28337893/adjuvant-treatment-with-a-symbiotic-in-patients-with-inflammatory-non-allergic-rhinitis
#16
M Gelardi, C De Luca, S Taliente, M L Fiorella, N Quaranta, C Russo, A Ciofalo, A Macchi, M Mancini, P Rosso, V Seccia, F Guagnini, G Ciprandi
Inflammatory non-allergic rhinitis (INAR) is characterized by the presence of an inflammatory infiltrate and a non-IgE-mediated pathogenesis. This retrospective, controlled, multicentre study investigated whether a symbiotic, containing Lactobacillus acidophilus NCFM, Bifidobacterium lactis, and fructo-oligosaccharides (Pollagen®, Allergy Therapeutics, Italy), prescribed as adjunctive therapy to a standard pharmacological treatment, was able to reduce symptom severity, endoscopic features, and nasal cytology in 93 patients (49 males and 44 females, mean age 36...
January 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28337589/colonization-by-non-pathogenic-bacteria-alters-mrna-expression-of-cytochromes-p450-in-originally-germ-free-mice
#17
L Jourová, P Anzenbacher, B Lišková, Z Matušková, P Hermanová, T Hudcovic, H Kozáková, L Hrnčířová, E Anzenbacherová
Gut microbiota provides a wide range of beneficial function for the host and has an immense effect on the host's health state. It has also been shown that gut microbiome is often involved in the biotransformation of xenobiotics; however, the molecular mechanisms of the interaction between the gut bacteria and the metabolism of drugs by the host are still unclear. To investigate the effect of microbial colonization on messenger RNA (mRNA) expression of liver cytochromes P450 (CYPs), the main drug-metabolizing enzymes, we used germ-free (GF) mice, lacking the intestinal flora and mice monocolonized by non-pathogenic bacteria Lactobacillus plantarum (NIZO2877) or probiotic bacteria Escherichia coli Nissle 1917 compared to specific pathogen-free (SPF) mice...
March 23, 2017: Folia Microbiologica
https://www.readbyqxmd.com/read/28337581/high-lactic-acid-and-fructose-production-via-mn-2-mediated-conversion-of-inulin-by-lactobacillus-paracasei
#18
Kaloyan Petrov, Luiza Popova, Penka Petrova
Lactobacillus paracasei DSM 23505 is able to produce high amounts of lactic acid (LA) by simultaneous saccharification and fermentation (SSF) of inulin. Aiming to obtain the highest possible amounts of LA and fructose, the present study is devoted to evaluate the impact of bivalent metal ions on the process of inulin conversion. It was shown that Mn(2+) strongly increases the activity of the purified key enzyme β-fructosidase. In vivo, batch fermentation kinetics revealed that the high Mn(2+) concentrations accelerated inulin hydrolysis by raise of the inulinase activity, and increased sugars conversion to LA through enhancement of the whole glycolytic flux...
March 23, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28337455/analysis-of-the-bacterial-communities-in-two-liquors-of-soy-sauce-aroma-as-revealed-by-high-throughput-sequencing-of-the-16s-rrna-v4-hypervariable-region
#19
Jing Tang, Xiaoxin Tang, Ming Tang, Ximin Zhang, Xiaorong Xu, Yin Yi
Chinese liquor is one of the world's oldest distilled alcoholic beverages and an important commercial fermented product in China. The Chinese liquor fermentation process has three stages: making Daqu (the starter), stacking fermentation on the ground, and liquor fermentation in pits. We investigated the bacterial diversity of Maotai and Guotai Daqu and liquor fermentation using high-throughput sequencing of the V4 hypervariable region of the 16S rRNA gene. A total of 70,297 sequences were obtained from the Daqu samples and clustered into 17 phyla...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28336717/publisher-s-expression-of-concern-lactobacillus-bulgaricus-prevents-intestinal-epithelial-cell-injury-caused-by-enterobacter-sakazakii-induced-nitric-oxide-both-in-vitro-and-in-the-newborn-rat-model-of-necrotizing-enterocolitis
#20
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